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Finding the Fourth Proportional to 8,658.07, 12,988.01 and 3,977.28

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Solution

The fourth proportional to 8,658.07, 12,988.01 and 3,977.28 is: 5,966.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,658.07 : 12,988.01 = 3,977.28 : x
  2. Step 2: Convert to fraction form
    8,658.07/12,988.01 = 3,977.28/x
  3. Step 3: Cross multiply
    8,658.07x = 12,988.01 × 3,977.28
  4. Step 4: Simplify right side
    8,658.07x = 51,656,952.41
  5. Step 5: Solve for x
    x = 51,656,952.41/8,658.07
  6. Step 6: Final answer
    x = 5,966.34

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.